ADC DVICSRIU1900 User Manual
Digivance™ Indoor Coverage Solution
Single Band Remote Interface Unit
(800 or 1900 MHz) User Manual
DRAFT
ADCP-75-114
Issue 2C
January 2002
1188201 Rev A
ADCP-75-114
Issue 2C
January 2002
Digivance™ Indoor Coverage Solution
Single Band Remote Interface Unit
(800 and 1900 MHz) User Manual
1188201 Rev A
ADCP-75-114 • Issue 2C • January 2002 • Preface
COPYRIGHT
2002, ADC Telecommunications, Inc.
All Rights Reserved
Printed in the U.S.A.
REVISION HISTORY
ISSUE DATE REASON FOR CHANGE
Issue 1
06/2001 Original
Issue 2
07/2001 Deleted forward path OIP3 specification from Table 2, Remote Interface Unit Specifications.
Issue 2C 01/02
TRADEMARK INFORMATION
Updated to include specifications for 1900 MHz unit.
ADC is a registered trademark of ADC Telecommunications, Inc.
Digivance is a trademark of ADC Telecommunications, Inc.
TORX is a registered trademark of Textron, Inc.
DISCLAIMER OF LIABILITY
Contents herein are current as of the date of publication. ADC reserves the right to change the contents without prior notice. In no
event shall ADC be liable for any damages resulting from loss of data, loss of use, or loss of profits and ADC further
disclaims any and all liability for indirect, incidental, special, consequential or other similar damages. This disclaimer of
liability applies to all products, publications and services during and after the warranty period.
This publication may be verified at any time by contacting ADC’s Technical Assistance Center at 1-800-366-3891, extension
73475 (in U.S.A. or Canada) or 952-917-3475 (outside U.S.A. and Canada), or by e-mail to technical@adc.com.
Page ii
ADC Telecommunications, Inc.
P.O. Box 1101, Minneapolis, Minnesota 55440-1101
In U.S.A. and Canada: 1-800-366-3891
Outside U.S.A. and Canada: (952) 938-8080
Fax: (952) 917-1717
TABLE OF CONTENTS
Content Page
ABOUT THIS MANUAL ........................................................................v
RELATED PUBLICATIONS .....................................................................v
ADMONISHMENTS ..........................................................................v
GENERAL SAFETY PRECAUTIONS ............................................................... vi
STANDARDS CERTIFICATION .................................................................. vi
LIST OF ACRONYMS AND ABBREVIATIONS ......................................................... vi
1 DESCRIPTION ....................................................................... 1
1.1 Primary Functions and Components .................................................. 1
1.2 Mounting .................................................................... 2
1.3 Fault Detection and Alarm Reporting .................................................. 3
1.4 RF Signal Connections ........................................................... 3
1.5 RF Signal Level Adjustments ....................................................... 3
1.6 Powering .................................................................... 3
1.7 Cooling ..................................................................... 3
1.8 User Interface ................................................................. 4
1.9 Specifications ................................................................. 5
2 INSTALLATION ...................................................................... 6
2.1 Tools and Materials ............................................................. 6
2.2 Unpacking and Inspection ......................................................... 7
2.3 Mounting Procedure............................................................. 7
2.4 Chassis Ground Connection ........................................................11
2.5 Coaxial Cable Connections ........................................................11
2.6 External Alarm System Connections .................................................. 13
2.7 AC Power Connection ............................................................15
3 OPERATION ........................................................................ 16
3.1 Tools and Materials .............................................................16
3.2 Turn-Up Unit and Verify Operation....................................................16
3.3 Forward Path Level Adjustment ..................................................... 17
3.4 Reverse Path Level Adjustment ..................................................... 18
4 MAINTENANCE ......................................................................20
4.1 Tools and Materials .............................................................20
4.2 Fault Detection and Alarm Reporting ..................................................20
4.3 Fan Replacement...............................................................21
5 CUSTOMER INFORMATION AND ASSISTANCE ..................................................24
ADCP-75-114 • Issue 2C • January 2002 • Preface
2002, ADC Telecommunications, Inc.
Page iii
ADCP-75-114 • Issue 2C • January 2002 • Preface
This page intentionally blank
Page iv
2002, ADC Telecommunications, Inc.
ABOUT THIS MANUAL
ADCP-75-114 • Issue 2C • January 2002 • Preface
This publication provides a description of the Digivance ICS Remote Interface Unit (RIU)
plus instructions for installing the RIU. An overview of the Digivance ICS and a complete
description of the Digital Host Unit (DHU), Digital Remote Unit (DRU) and the Digital
Expansion Unit (DEU) are provided in the Digivance ICS System Installation and Operation
Manual (See Related Publications section). The RIU is an interface device that is used in
conjunction with the Digivance ICS product.
RELATED PUBLICATIONS
The following lists related manuals and their publication numbers. Copies of these
publications can be ordered by contacting the ADC Technical Assistance Center at 1-800-3663891, extension 73475 (in U.S.A. or Canada) or 952-917-3475 (outside U.S.A. and Canada).
Title/Description ADCP Number
Digivance ICS 800 and 1900 Mhz Systems Installation and
Operation Manual (systems without modular optical transceivers)
Digivance ICS 800 MHz Single or Multi-Mode Fiber System Installation
and Operation Manual (systems with modular optical transceivers)
Digivance ICS Digital Expansion Unit Installation Instructions
Digivance ICS Digital Remote Unit Installation Instructions
ADCP-75-110
ADCP-75-130
ADCP-75-111
ADCP-75-112
Digivance ICS Local Interface Unit User Manual
ADMONISHMENTS
Important safety admonishments are used throughout this manual to warn of possible hazards
to persons or equipment. An admonishment identifies a possible hazard and then explains
what may happen if the hazard is not avoided. The admonishments — in the form of Dangers,
Warnings, and Cautions — must be followed at all times. These warnings are flagged by use
of the triangular alert icon (seen below), and are listed in descending order of severity of injury
or damage and likelihood of occurrence.
Danger: Danger is used to indicate the presence of a hazard that will cause severe personal
injury, death, or substantial property damage if the hazard is not avoided.
Warning: Warning is used to indicate the presence of a hazard that can cause severe
personal injury, death, or substantial property damage if the hazard is not avoided.
Caution: Caution is used to indicate the presence of a hazard that will or can cause minor
personal injury or property damage if the hazard is not avoided.
ADCP-75-113
2002, ADC Telecommunications, Inc.
Page v
ADCP-75-114 • Issue 2C • January 2002 • Preface
GENERAL SAFETY PRECAUTIONS
Warning: Wet conditions increase the potential for receiving an electrical shock when
installing or using electrically powered equipment. To prevent electrical shock, never install
or use electrical equipment in a wet location or during a lightning storm.
STANDARDS CERTIFICATION
FCC: This equipment complies with the applicable sections of Title 47 CFR Parts 22 and 24.
UL/CUL: This equipment complies with UL and CUL 1950 Standard for Safety for
Information Technology Equipment, including Electrical Business Equipment.
IC (Industry Canada): This equipment complies with IC Certification RSS-131.
LIST OF ACRONYMS AND ABBREVIATIONS
The acronyms and abbreviations used in this manual are detailed in the following list:
A Amperes
AC Alternating Current
CUL Canadian Underwriters Laboratories
DC Direct Current
DEU Digital Expansion Unit
DHU Digital Host Unit
DRU Digital Remote Unit
EIA Electronic Industries Association
ESD Electrostatic Discharge
FCC Federal Communications Commission
IC Industry Canada
ICS Indoor Coverage Solution
LIU Local Interface Unit
NOC Network Operations Center
RIU Remote Interface Unit
RF Radio Frequency
UL Underwriters Laboratories
V Volts
VAC Volts Alternating Current
VDC Volts Direct Current
WECO Western Electric Company
Page vi
2002, ADC Telecommunications, Inc.
1 DESCRIPTION
ADCP-75-114 • Issue 2C • January 2002
This section provides a complete description of the Remote Interface Unit (RIU).
1.1 Primary Functions and Components
The RIU, shown in Figure 1, serves as the interfacing unit between a remote BTS and the
Digivance DHU. The RIU provides the following basic functions:
• RF
•
•
•
3.5 INCHES
interface to the BTS (through donor antenna) and DHU
Gain adjustments to the forward and reverse path RF signal
Duplexing of the forward and reverse path RF signals
Alarm reporting to an external alarm system
17.2 INCHES
(89 mm)
(437 mm)
11.4 INCHES
(290 mm)
13.6 INCHES
(345 mm)
16650-A
3.9 INCHES
(99 mm)
FRONT PANEL
CABLE MANAGEMENT
TRAY
MOUNTING
BRACKET
(BOTH SIDES)
Figure 1. Remote Interface Unit
A remote interface between the DHU and the cell site BTS via a donor antenna requires
specific RF input and output signal levels (within normal operating range) at the DHU and
antenna. The correct levels at the DHU and antenna can be provided using the Remote
Interface Unit (RIU). The RIU is an accessory item that is used to adjust both the forward and
reverse path RF signal levels. In the forward path, the RIU provides gain adjustments in 1 dB
increments over a range of +9 to +40 dB. In the reverse path, the RIU provides gain
adjustments in 1 dB increments over a range of +28 to +59 dB (800 Mhz) or +33 to +64 dB
(1900 MHz).
The RIU connects to a directional antenna through a duplexer (internal) which provides
separate forward and reverse path connections for the DHU. In the forward path (downlink),
the recommended composite maximum RF input signal level at the DHU is –20 dBm. When
the level of the RF input signal at the DHU is –20 dBm, the level of the RF output signal at
the DRU will be +13 dBm (800 MHz) or +16 dBm (1900 MHz).
© 2002, ADC Telecommunications, Inc.
Page 1
ADCP-75-114 • Issue 2C • January 2002
In the reverse path, the input signal level received at the DRU antenna will vary depending on
the path loss between the cell phone and the antenna and the strength of the cell phone signal.
When the level of the reverse path (uplink) signal at the DRU antenna is at a maximum, the
composite maximum level of the output signal from the DHU will be –30 dBm. Therefore, it
will generally be necessary to add some gain to the reverse path signal in order to provide the
output RF signal level required at the donor antenna. A block diagram showing a typical remote
DHU to BTS interface is provided in Figure 2.
DIRECTIONAL ANTENNA
TO/FROM CELL SITE BTS
REVERSE
(UPLINK)
REMOTE
INTERFACE
UNIT
FORWARD
(DOWNLINK)
-20 dBm
(COMPOSITE MAX)
-30 dBm
(COMPOSITE MAX)
Figure 2. Remote BTS Interface Block Diagram
DIGITAL
HOST
UNIT
DIRECTIONAL ANTENNA
TO/FROM HANDSETS
+13 dBm FOR 800 MHz
+16 dBm FOR 1900 MHz
(COMPOSITE MAX)
OPTICAL LINK
OPTICAL LINK
DIGITAL
REMOTE
UNIT
-40 dBm
(COMPOSITE
MAX)
16425-B
The RIU consists of an electronic circuit board assembly, power supply, duplexer, and linear
power amplifier that are mounted within a powder-coated sheet metal enclosure. The metal
enclosure provides a mounting point for the electronic components, serves as a heat sink, and
controls RF emissions. Except for the fan, the electronic components are not user replaceable.
The RIU is designed for use within a non-condensing indoor environment such as inside a
wiring closet or cabinet. All controls, connectors, and indicators are mounted on the RIU front
panel for convenient access. Cable management functions for the power and coaxial cables are
provided by a cable management tray that extends outward from the RIU front panel.
Two versions of the 800 Mhz RIU are available. One version is used to interface with an A-band
BTS and the other version is used to interface with a B-band BTS. Six versions of the 1900 MHz
RIU are available, one version for each of the six 1900 MHz sub-bands. The appropriate frequency
and sub-band are clearly marked on a label attached to the RIU cable management tray
1.2 Mounting
The RIU may be used in both rack-mount and wall-mount applications. For rack mount
applications, a pair of reversible mounting brackets is provided that allow the RIU to be mounted in
either a 19-inch or 23-inch EIA or WECO equipment rack. When rack-mounted, the front panel of
the RIU is flush with the front of the rack. The cable management tray extends 3.9 inches (99 mm)
beyond the front panel. Fasteners are provided for rack-mount applications.
For wall-mount applications, a pair of holes is provided in the cable management tray which
allow the RIU to be mounted on any flat vertical surface. The mounting brackets may also be
removed and reinstalled is such a way as to be used to secure the RIU to a flat vertical surface.
The RIU should be oriented with the front panel facing upward when wall-mounted. The
fasteners must be provided by the installer in wall-mount applications.
Page 2
© 2002, ADC Telecommunications, Inc.
1.3 Fault Detection and Alarm Reporting
ADCP-75-114 • Issue 2C • January 2002
The RIU is designed to detect a power amplifier over or under current condition and a high
temperature condition. A single front panel Light Emitting Diode (LED) indicator turns from
green to red or yellow if a fault is detected. A set of alarm contacts (normally open and
normally closed) are also provided for reporting an alarm to an external alarm system when a
fault is detected. Both major alarm (power amplifier over/undercurrent condition or power
failure) and minor alarm (high temperature) contacts are provided.
1.4 RF Signal Connections
The RF signal connections between the RIU and DHU are supported through a pair of type N
female connectors mounted on the RIU front panel. One connector is used for connecting the
forward path coaxial cable and the other connector is used for connecting the reverse path coaxial
cable. The RF signal connection between the RIU and the donor antenna is supported through a
single type N female connector. The single connector is used for connecting the coaxial jumper
cable that links the RIU to the donor antenna. The DHU cannot be connected directly to a donor
antenna and requires an interface device such as the RIU.
1.5 RF Signal Level Adjustments
The RIU is equipped with two digital attenuators for adjusting the signal levels of the forward
and reverse path RF signals. The attenuators provide an attenuation adjustment range of 0 to
31 dB and can be set in 1 dB increments. In the forward path, this range provides a
maximum gain of +40 dB (attenuator set to 0) or a minimum gain of +9 dB (attenuator set to
31 dB). In the reverse path for 800 MHz units, this range provides a maximum gain of +59
dB (attenuator set to 0) or a minimum gain of +28 dB (attenuator set to 31 dB). In the reverse
path for 1900 MHz units, this range provides a maximum gain of +64 dB (attenuator set to 0)
or a minimum gain of +33 dB (with attenuator set to 31 dB).
Each attenuator is adjustable by means of two rotary switches which are mounted behind the
RIU front panel. Access to each rotary switch is through a small hole. A small screwdriver is
required to adjust the switch setting. Turning each switch adds or removes attenuation and
therefore adjusts the signal level of the specified signal path.
1.6 Powering
The RIU is powered by 120/240 VAC (50–60 Hz) power which is supplied through a standard
three-conductor AC power cord. The power cord is provided with the RIU and is 98 inches
(2.5 meters ) long. A resetable circuit breaker/On-Off switch is provided at the unit front
panel. The switch applies power to the RIU internal power supply.
1.7 Cooling
Continuous air flow for cooling is provided by a fan mounted on the right side of the housing.
A minimum of 3 inches (76 mm) of clearance space must be provided on both the left and
right sides of the RIU for air intake and exhaust. An alarm is provided that indicates if a high
temperature condition (>58º C/136º F) occurs. The fan may be field-replaced if it fails.
© 2002, ADC Telecommunications, Inc.
Page 3
Loading...